<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            width: 4000px;
            height: 4000px;
            background-color: pink;
            background-image: url(../day01/蜡笔小新.jpg);
            background-repeat: no-repeat;
            background-repeat: repeat-x;
            background-repeat: repeat-y;
        }
    </style>
</head>
<body>
    <div>div</div>
</body>
</html>